Photodynamic therapy (PDT) involves the use of photochemical reactions mediated through the interaction of photosensitizing agents, light, and oxygen for the treatment of malignant or benign diseases.
Photodynamic therapy is a 2-step procedure. In the first step, the photosensitizer is administered to the patient by one of several routes (eg, topical, oral, intravenous), and it is allowed to be taken up by the target cells.
The second step involves the activation of the photosensitizer in the presence of oxygen with a specific wavelength of light directed toward the target tissue. Because the photosensitizer is preferentially absorbed by hyperproliferative tissue and the light source is directly targeted on the lesional tissue, photodynamic therapy achieves dual selectivity, minimizing damage to adjacent healthy structures.
The Photofacial, also referred to as Photorejuvenation, is a laser skin care treatment that quickly, safely and comfortably removes sun spots, freckles and age spots from the face, chest, arms and hands. It may also repair blotchy, irregular skin tone, red blood vessels and photodamage. The signs of sun damage will flake off after one or two treatments, leaving clear, younger-looking skin.
Depending on the skin condition treated Patients typically will require a series of 6-12 treatments with very short intervals.